Hello TAG!

This supersedes https://github.com/w3ctag/design-reviews/issues/309 as a request for a TAG review of:

• Name: Screen Capture
• Specification URL: https://w3c.github.io/mediacapture-screen-share/
• Explainer (containing user needs and example code)¹: explainer.md
• GitHub issues (if you prefer feedback filed there): here or https://github.com/w3c/mediacapture-screen-share/issues/59
• Tests: wpt (lack of green is due to https://github.com/web-platform-tests/wpt/issues/5671)
• Primary contacts (and their relationship to the specification): @jan-ivar (co-chair), @martinthomson (editor)

Further details:

• Relevant time constraints or deadlines: Would like to go to CR soon. Charter ends March 2020.
• I've read & filled out the Self-Review Questionnare on Security and Privacy. Answers are here.
• I have reviewed the TAG's API Design Principles
• The group where the work on this specification is: WebRTC

You should also know that...

This has been implemented in all major browsers (behind a flag in Safari), on desktop platforms only (mostly). No opposition recorded.

• Simple demo page.
• The feature is broadly adopted by most major web conferencing services (hangouts, whereby, jitsi, meet, cisco, meetecho and many others).
• Audio is a recent addition, limited to Chrome atm afaik.
• The user gesture requirement is new, and only implemented by Safari atm (patch in Firefox).
• Some concern (from yours truly) that elevated permissions are not established rigorously enough in all browsers.

We'd prefer the TAG provide feedback as (please select one):

• open issues in our GitHub repo for each point of feedback
• open a single issue in our GitHub repo for the entire review
• leave review feedback as a comment in this issue and notify @jan-ivar

Thanks!